Material: Earring hooks are made of copper and earring backs are made of clear silicone, pliable and comfortable to wear, safe and no reactions .Feature: earring hooks is simple but delicate, enjoy playful curves and dynamic styles, step out of the standard hoop earrings and show a curvy style on your ear, suits for almost every earring wearing occasions .Function: Hypo-allergenic ear wires hooks will give you more choices to DIY your own earrings, rubber earring backs to assist your daily earring wearing, no worry about the earring slipping issues .Application: Ideal for your making earrings, DIY jewelry making crafting projects, use them with other jewellery findings to make fascinating jewellery or beautiful ornament.all Products From Us Have Undergone Strict Quality Checks.if There Is Any Quality Problem Or You Are Not Satisfied With The Productcontact Us.we Will Give You The Best Solution. .